| Price | $0.20 |
|---|---|
| Category | Components |
| Availability | In stock |
| Delivery | Shipped across Lebanon, or collect from the lab |
A small-signal NPN transistor in TO-92 and probably the most widely taught transistor there is. It blocks 40V, passes up to 200 mA, has a current gain of 100 to 300 and switches fast enough for RF work at 300 MHz. Perfect for driving an LED or an optocoupler from a logic pin, buffering a signal or building a simple amplifier stage - just remember the 200 mA ceiling.
Key features
- NPN, 40V collector-emitter, 200 mA max
- Current gain 100 to 300
- Transition frequency 300 MHz
- 625 mW power dissipation
- TO-92, pins emitter, base, collector
- For LED drivers, buffers and small amplifiers
Details
Specifications
| Model | 2N3904 |
|---|---|
| Type | NPN bipolar junction transistor |
| Collector-emitter voltage | 40V |
| Collector current | 200 mA max |
| DC current gain (hFE) | 100 to 300 |
| Transition frequency | 300 MHz |
| Power dissipation | 625 mW |
| Package | TO-92 |
| Pinout | Emitter, base, collector (flat face towards you, left to right) |
